PWM inverter device
US7068526B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2003 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Apr 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/53875
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A PWM inverter with a PWM pulse output. The PWM pulse signal is output upon magnitude comparison of phase voltage commands with a carrier wave of a triangular or a saw-tooth waveform. A maximum phase whose absolute value is a maximum among absolute values of phases of the phase voltage commands is selected. In a case where the phase voltage commands of the maximum phase are larger than a maximum value of the carrier wave. A difference obtained from a first subtraction of the maximum value of the carrier wave from phase voltage commands of the maximum phase is set as a first differential. The first differential is subtracted from the phase voltage commands of the respective phases in a second subtraction. The first and second subtraction results are set as phase output voltage commands of the respective phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.